Tube casing and support



April 6, 1943, J. J. GRC DBE 2,315,787-

' TUBE CASING AND SUPPORT Origihal Filed May 20, 1939 4 Sheets-Shet 1 mlmm 1 /2711, fig? 37 F J53 llllmu April 1943- J. J. GROBE 2,315,787

TUBE CASING AND SUPPORT I Origin'al Filed May 20, 1939 4 eets-Sheet 2 f/Gi 5.

(full'ua JGrobe 6Z7 figiqz April 1943- J. J. GROBE 2,315,787

Y TUBE CASING AND SUPPORT 7 Original Filed May 20, 1959 4 Sheets-Shegt s J07 I I I H w 1 7517 \\\Q1\v I l April 6, 1943.

J. J. GROBE TUBE CASING AND SUPPORT 4 Sheets-Sheet 4 Original Filed May 20, 1939 jive Z01: Judas JGi abe 3 Patented Apr. 6, 1943 V UNITED STATES PATENT OFFICE TUBE CASING AND SUPPORT Julius J. Grobe, Oak Park, Ill., assignor to General Electric X-Ray Corporation, Chicago, Ill., a corporation of New York Original application May 20, 1939, Serial N0.

274,778. Divided and this 1940, Serial No. 345,534

application July 15,

15 Claims. (Cl. 250 9i)) My invention relates in general to electrical apparatus, especially high potential apparatus, and has more particular reference to a shockproof casing and support means for X-ray tubes, the present application comprising subject-matter divided from my co-pending application for United States Letters Patent, Serial No. 274,778,

filed May 20, 1939.

An important object of the present invention is to provide improved light-weight support means for X-ray tube apparatus; a further object being to embody the support as a casing having facilities for mounting an X-ray tube therein in readily removable fashion so that the tube, when mounted in the casing, is thoroughly insulated in shock-proof fashion.

Another important object is to provide a lightweight compact support for X-ray tubes, comprising a casing in which the tube may be mounted in position immersed in a suitable insulating liquid, including means for maintaining the easing portions containing the tube entirely filled with the insulating liquid, the tube mounting withal being light in weight and compact and by the same may be readily shifted to desired positions with respect to a subject to be exposed to the action of the X-light generated by the tube.

Another important object is to provide a lightweight adjustable mounting for the tube carrier whereby the same may be shifted easily to any desired position with respect to a subject being treated and tilted on the mounting in order to adjust the direction toward the subject of X-light emitted by the supported tube.

Another important object resides in providing index means for indicating the relatively tilted position of the mounted X-light generator.

Another important object resides in providing improved support means for the tube casing whereby the same may be carried at a desired elevation above a table and arranged at any point within the area of the table,the support extending compactly on one side of the table only and comprising a single upright and having the ability not only to support the lamp above the table but allowing the lamp to be positioned beneath the table and also to be swung behind the support away from the table for use independently of the table; a further object being to provide a tube housing of such lightness and compactness as will permit the mounting of the same upon the simplified, extremely compact, multiple-purpose sup port.

These and numerous other important objects, advantages and inherent functions of the invention will become apparent as the same is more fully understood from the followingdescriptio'n, which, taken in connection with'the accompany-- ing drawings, discloses a preferred embodiment of the invention.

Referring to the drawings v Figure 1 is a perspective View of radiogr'aphic apparatus providing an adjustable support for" an X-light generator in accordance with the teachings of the present invention;

Figure 2 is an enlarged perspective view of a casing for an X-light generator'forming a part of the apparatus shown inFigurel;

Figure 3 is a vertical section taken substan tially along the line 3-3 in Figure 1; I I 1 Figure lis' a sectional view taken substantially along the lined-4 in Figur'e13;

Figure 5 is a sectional viewtaken substantially along the line5 5 in Figure2; Figure 6 is a sectional view taken substantially along the line 56 in Figure 5;

Figure 7 is an elevational View of a cable connector;

Figure 8 is a view ofa supportbracket;

Figure 9 is a sectional view taken substantially along the line 99 in Figure 8; r

Figure 10 is a sectional view of washers form-' ing part of the assembly as shown in Figure 8 and ,w 7 I t Figure 11 is a face view of an index plate.

To illustrate the invention, thedrawings show a compact apparatus for fluoroscopic examination and for radiographic purposes, comprising" means forming a support l3, for tiltably carrying a table l5 upon which maybe supported a subject for X-ray exposure, a housing I! for an X- light generator, and mounting means l9 for adjustably supporting the housing and generator contained therein whereby the source of X-light may be adjusted vertically and horizontally with respect to the table l5 and may be tilted toadjust the angularity of the X-light emitted by the generator. While the illustrated apparatus has many novel and convenient features, the present invention is not, of course, necessarily restricted to the particular form or arrangement of its component parts which are shown on the draw-,

poses of exposition the adjustable 'support and casing for the X-light generator are illustrated, comprises the table l5 andthe table support l3;

on or against which a body may becarried in position to be pictured radiographically or otherwise exposed to X-rays. The table-like element |5 comprises a panel suitably supported in a frame 2| which in turn is mounted on the support pedestal l3. This pedestal in the illustrated embodiment comprises a foot portion 22 and an upstanding portion afiording a bearing 23 in which the frameZl and table |5 are tiltably mounted.

Cooperating means on the frame 2| and the pedestal l3, preferably comprising a rack on the frame and suitable gears on the pedestal drivingly connected with a hand crank, are provided for turning the frame 2| on the pedestal to any desired inclination. The frame may be provided with tracks 29 and 3| along the opposite sides of the frame and under the table top |5 for guiding and supporting a carriage 33 for longitudinal movement immediately beneath the table top, the carriage being adapted to support a cassette or holder for film sensitive to X-light for the making of radiograms in cooperation with the X-light generator in the casing H as a light source. The carriage 33 is freely movable between the opposite ends of the table l5 whereby the film may be positioned in any desired locality within the longitudinal extent of the table, and suitable means 34 for counterbalancing and means 36 for locking the carriage 33 in any adjusted position within the length of the table top is Provided.

The radiographic equipment also comprises an X-light generator 35 in the form of an X-ray tube contained in the housing H, which housing is formed with a window through which X-rays generated in the tube 35 may be projected outwardly of the housing l1, and means is provided for supporting a casing above the table top in position to direct- X-light downwardly upon a body supported on the table. The tube in the casing I! may be energized through suitable cables 3'! connecting with the tube within the casing whereby the entire assembly is rendered substantially shock-proof.

The casing I1 is tiltably mounted in a yoke 39 having a stem 4| extending in and supported by a bushing 43, which in turn is carried on an arm 45 extending from an upright 6|, the arm preferably being carried on a pivot 59 in a frame 63 which is slidable longtiudinally upon the support 6|.

As shown in Figure 8 the stem 4| comprises a cylindrical member 42 slidingly received in the bushing 43, said member 42 at one end being secured on a disk 44 formed with peripheral notches 46. This disk 44 extends opposite an end of the bushing 43 and has an outwardly extending pin 48 thereon in line with the axis of the bushing 43 and forming a support upon which a collar 52 comprising a part of the yoke 33 is tiltably mounted, said collar 52 having a central opening 58 -for;receiving the pin 48 and said pin carrying thereon a fiber washer 66, a metal washer 68, and a spring washer 12, the collar 52 and the washers 66, 68, and 12 being held'on the pin 48 as by means of a cap nut I6.

The collar 52 is provided with an ofiset sleeve 18 preferably formed integrally therewith in position to overlie the notched edge of the disk 44, and said sleeve 18 is fitted with a manually retractable spring pressed detent 82 adapted to lock in the notches 46 in order to secure the yoke and the casing l1 and enclosed tube 35 in predetermined angularly adjusted position on the pin 48, said adjusted positions being determined by the positions of the notches 46 which are preferably such as to hold the yoke 39 in the position shown in full lines in Figure 1 and in positions rotated in either direction and from the position shown in Figure Suitable means, such as a socket 84 in the end of the bushing 43 and a pin 86 on the disk 44 adapted to be slidingly received in the socket is provided for preventing relative rotation of the disk 44 with respect to the bushing 43.

Within the cylindrical extension 42 of the disk 44 extends a preferably cylindrical shell 88 adapted to move longitudinally in the sleeve 42. The case 88 has an opening in its bottom through which projects a stem 92 which is fastened on the disk 44 in position extending within the case 88. This stem 92 has a nut and washer secured on its end within the case 88 in position to hold a spring 94 between the bottom of the case 88 and the washer on the stem 92, said spring encircling said stem and serving normally to draw the case 88 within the bushing 43 toward the plate 44. The open end of the case 88 has a cap 86 threaded therein, said cap having edges overlapping the end of the sleeve 42 and the end of the bushing 43. The spring 94 thus normally retains the plate 44 and the collar 52 of the yoke against the end of the bushing 43. However, the yoke and lamp housing may be drawn longitudinally away from the end of the bushing 43 in order to obtain additional extension in the event that it may be desired to position the lamp above the extreme side edge of the table l5 opposite from the upright 6|. It will be noted, however, that when thus extended, a substantial portion of the sleeve 42 will remain within the bushing 43 to provide adequate support; that the cap 86 when the parts are at maximum extension serves to hold the yoke within the bushing 43; and that when the parts are in normal position illustrated in Figure 8 thestem means 4| does not project outwardly of the bushing 43 sufliciently to interfere with the free movement of the cables 31 when the yoke is tilted about the axis of the bushing.

The arm 45, it will be noted, extends downwardly from the bushing 43 and thence substantially horizontally to the support bracket 63 in order not to interfere with or crimp the cables 3! when the yoke and casing I9 is rotated 90 in, a counterclockwise direction from the position shown in .Figure 1.

The illustrated casing support structure permits the casing to be adjustably tilted in the yoke 39 and be locked in adjusted position by means of the manually operable clamp member 2|5, and also permits the yoke 39 on the stem 4| to be tilted to any desired angular position within the bushing 43 and locked in predetermined angular relationship by means of the manually operable latch 82.

The frame 63, on which the arm 45 is pivoted, may likewise be clamped in any vertically adjusted position on the support member 6|, and

latching means 56 is provided for the purpose of.

securing the arm 45 in position on the frame 63 to support the casing firmly in position: In making radiographic pictures of the subjecton the table IS, the tube and its casing may be secured in position directing th X-light vertically downwardly toward the table top, and the position of the casing I! may be adjusted laterally of the table top by sliding the stem 4| longitudinally in the bushing 43 when the parts are posi tioned as shown in Figure 1 of the drawings. The

support 6| preferably extends in a direction at right angles with respect to the plane of the table top, and the bracket or carriage 53 affords a means for adjusting the vertical distance between the lamp housing I! and the top of the table.

The support 5| preferably comprises a .reinforced tubular member of sheet metal forming tracks 55 on its opposite sides for slidingly carrying the frame 63 for longitudinal movement on the support. A counterweight also may be, and preferably is, arranged within the tubular support 6| for sliding movement along internallydisposed tracks. To this end, the member 6| may comprise a pair of sheet metal plates 62 having flanged ends secured together upon opposite sides of steel track forming strips 65, said strips formin internal tracks for the counterweight 64 and external tracks for the bracket 63. The counterweight 64 is preferably interconnected with the bracket 63 by means of cords 6'! travelling on sheaves 69 at the oppositeends of the supportmember 6| whereby to support the frame 63 and the'tube-carrying casing 11 at any adjusted position on the support and also to facilitate the movement of the tube-carrying assembly on the support 6|.

The support BI and the tube-carrying assembly thereon are mounted for longitudinal as well as lateral movement with respect to the table top i3, and to this end the member BI is mounted on a frame '19 which in turn is mounted on the table support frame 2! for movement thereon in a longitudinal direction with respect to the table top. To this end. the frame 19 is provided with rollers 8! which extend in suitable tracks 83 formed longitudinally in the opposite sides of the frame 2 l. A suitable counterweight 85, longitudinally movable in tracks 81 on the frame 2|, is provided for balancing the weight of the frame 59 and the tube-carrying elements supported thereby when the table top is tilted from a horizontal position, the counterweight 85 being interconnected with the opposite sides of the frame 79 by means of cords travelling on suitable sheaves at the opposite ends of the frame 2|.

, To provide for lateral movement of the support SI and of the light source in the casing I! with respect to the table top, the member BI is mounted on a bracket H forming a part of a support frame 74, comprising preferably a pair of spaced raiis #3 extending from the bracket H beneath the frame 2| and slidingly received in rollers '35 on the mounting frame 19. The bracket H and the member 5! thus are supported for movement with respect to the frame 2! in a direction normal to the direction of movement of the frame 19 in the tracks 3|.

It will be seen that the member 6i extends below the bracket H and substantially beneath the table top, and this arrangement permits the tube casing H to be positioned beneath the table in the position illustrated in dotted lines in Figure 3 of the drawings. This is accomplished by un1atching the fastener 55, swinging the arm 45 into the position shown in dotted lines at H1 in Figure 1 of the drawings and then forcing the frame 63 downwardly along the upright 6| to brin the arm below the frame 14. The lamp in the casing ll may then be inverted by turning the lamp housing and yoke in the bushing 43, after which the arm 45 may be swung beneath the table to position the housing under the frame 14, said frame having preferably an annular seat 54 to receive the rim 49 of the housing defining the X-light transmitting portions thereof. By rais ing the arm 45 onthe memberfil after the cats-- 1 which is carried a spring pressed buffer .98, the

buffer comprising a pin in the mounting around which is carried a helical spring with the end of the spring extending above the end of the pin and carrying a preferably rubber buffer member attached to the spring. The buffer faces toward the lower end of the frame 63 and the parts are so positioned that as the frame engages the buffer and-the buffer spring is compressed, the frame 63 will be resiliently supported on the upright 6| so that thelarm 45 with casing IT inverted thereon need merely be swung into position beneath the seat 54. Thereupon, the latch means 56 will operate to secure the arm 45 on the frame, and as the latch so locks the arm 45 in position, the frame 63 may be released and forced by the action of the spring pressed means 98 upwardly on the member 6! to force the casing yieldingly upon the seat 54.

The latch as shown in Figure 4, comprises a pin IBI set in the arm 45 at the upper end of the bearing 59 in position to be received in one or other of a pair of notches E83 formed in an extension !85 at the upper end of the sliding bracket 63. When the pin I8! is in one of said notches E83 the arm 45 will occupy the position shown in full lines, shown in Figures 1 and 3 in the drawings. When the pin I8! is in the other of said notches I83 the arm will occupy the position 2 IT shown in dotted lines in Figure 1 of the drawings. The pin l8i may be locked and thus retained in either of the-notches by means of the latch member 55, which comprises an arm pivoted as at i8! on the frame 63 midway between the notches it. This pivoted arm has oppositely extending fingers I89 of cam-like shape so that if the arm 45 is swung toward one of the notches while the latch 5-5 is in latching position, the pin it! may engage upon the cam-like fingers I89 and tilt the latch member 56 upwardly on its pivot to uncover the notch and permit the pin 18! to enter the same beneath the raised latch. After the pin thus has entered the notch, the latch of its own weight will drop behind the pin into locking position.

A'suitable screen i5! is provided for fluoroscopic examination. This screen is mounted on an arm l53pivoted as at I55 on the bracket H. Suitable spring and latch means'are provided in a housing [57 to normally hold the screen in an inoperative position as shown in Figure l. The screen, however, may be swung down over the table top when needed for fluoroscopic work. The frame l4 adjacent the seat 54 may be pro vided with a shutter actuated by a control cable l5! under the control ofsuitable actuating means i 59 conveniently located on the arm I53 adjacent the screen I56. 7 I

i The arm 45 may also be swung from the position shown in Figure l to a position 2|! behind the vertical support member 6| in order to permit the use of the lamp in the casing i! for radiographic and fluoroscopic purposes, independently of thetable, and when so positioned,

of course, the casing may be'tilted in the bushing 43 to any desired angularity.

It will be seen from the foregoing that the apparatus may be readily adjusted to position the light source in the casing I! at any desired elevation above any desired point within the area of the table top; that the light source also may be positioned below the table top and also in position behind the upright SI for independent use. This facility is accomplished not only by the simple counter-balanced support means afforded by the movement of the bracket 63 on the upright 6| and by the neat, compact arrangement of the support arm 45 and the bracket 39, but the flexibility of the apparatus is in no small measure due to the provision of the light-weight 'shockproof casing IT in which the tube 35 is supported. Were it not for the unusual lightness of the casing, which in part is due to its particularly compact design, great difficulty would be encountered in supporting the lamp with sufficient rigidity at a point remote from the upright 6| to permit effective operation of the lamp for radiographic and fluoroscopic purposes. The features of the invention, however, pertaining to the light-weight and compact construction of the housing I'I allow the same to be mounted on the support means heretofore described, which support means may conveniently be designated as an overhung beam support in that the weight of the supported parts is carried entirely on and through the upright 6| which in turn is carried entirely at one side of the table.

" table on which the support BI is positioned are entirely free and unobstructed. This is a valuable feature that will be greatly appreciated by roentgenologists.

As heretofore stated, the manifold advantages and simplicities of the equipment herein illustrated and described are made possible in part by the novelties of design and construction of the casing II, which comprises a housing 25 preferably formed as a casting of light-weight metal and affording an elongated preferably cylindrical cavity 21 in which the X-ray tube 35 may be assembled, the ends of the cavity 21 being open to facilitate insertion of the tube therein, and covers 41 comprising plates of light-weight metallic material are provided for sealing the open ends of the cavity 21 after the tube has been mounted in the cavity.

The housing 25 is provided with an opening 48, the outer walls of the housing being formed with an annular rim 49 at said opening, and the opening within said rim is closed by a plate of material freely pervious to X-light. The tube 35 may comprise the usual sealed envelope 53 in which is arranged a cathode 93 and an anode 95 adapted to function as a source of X-rays when bombarded with electrons emitted by the cathode. Within the cavity 21 and encircling the tube 35 when in place, and particularly the central portions thereof, is arranged a cylindrical sleeve 91 of lead or other material impervious to X-light, said sleeve 91 having an opening 99 therein in position coinciding with the casing opening 48, and the tube is preferably supported adjacent the inner end of a cone IOI of X-light pervious material extending in the opening 48 between the tube 35 and the plate 5|, said cone being preferably formed integral with said plate 5|, and its inner tube facing surfaces, being equally spaced at all points therein from the facing portions'of the tube 35.

The inner surfaces of the opening 48 also are preferably covered by means of a sleeve I03 of lead or other material impervious to X-light, and the plate 5| is sealed at its edges on the casing bymeans of a fluid-tight sealing gasket I05. A ring of lead I02 also is preferably anchored on the plate 5| at the rim thereof by means of fastening screws I04 and blocks I116.

The housing 25 preferably at its side opposite from the opening 48 is formed with a pair of spaced apart chambers I01, the walls of which are formed integral with the walls of the tube cavity 21. These chambers II" are closed at one end by walls I09 forming a continuation of the walls of the cavity 21, so that the chambers I01 communicate with the cavity 2! approximately opposite the ends of the tube 35. Other ends of the chambers I01 are formed with openings defined by seats III, in which are sealed socket members II3 preferably of insulating material, extending within the chambers IO'I from the open ends thereof to a point opposite the ends of the tube 35. These socket members provide leakproof covers for the open ends of the chambers I01 and are adapted to receive the terminal ends of the anode and cathode cables 31, and to make connection between the several conductors of the cable and terminals I35 and MI at the bottom of the cable socket members I I3.

The socket members 3 at their inner ends carry bracket means I I5 for supporting the tube 35. The socket member II 3 at the anode end of the casing is provided with a bracket member I2I having a portion I23 carrying a headed screw I21 in position opposite a projection element I25 at the anode end of the tube, said projecting element being electrically connected with the anode and being provided with a diametral slot to receive the member I21 as the tube is inserted from the cathode end of the casing. The socket member I I3 at the cathode end of the casing carries a bracket member II'I on which is secured a plate H9. The plate H9 is adapted to be removably fastened on the cathode end of the tube by means of a screw H8. The plate H9 is first attached on the tube and inserted with it into the casing. The plate has a pair of openings to receive dowels I22 on the bracket I I1, and the plate has an opening I24 to take a holding screw for fastening the plate to the bracket I IS.

The electrical connection between the anode and its corresponding cable 31 is accomplished through the bracket I2I and the terminals I35 and MI with all of the conductors of the anode cable. Electrical connection with the cathode is accomplished by means of the cathode leads I29, which may be connected on an insulated terminal block I3I carried by the plate II9. After insertion of the tube in the casing conductors I33 may be connected between the terminal block and the terminals I35 disposed in the ends of the cathode socket member IE3 which preferably is formed of insulating material.

The cables 31 preferably comprise heavily insulated conductors, the ends of the cable being fitted in a jack member I3! carrying prongs I39 which are adapted to make contact with the terminals I35 when the jack member I3! is inserted in the socket member I I3. The jack member I31 preferably comprises three prongs I39, at least one of which is of a size different from the others so that the jack I31 may be inserted in one position only to make proper contact between the prongs I39 and the terminals I35. One of the prongs I39 also fits a terminal I4l which' is grounded on the bracket II! and hence connected through the plate 9 with the cathode structure in the tube 3 5.

i The cover members 41 are provided with annular outstanding flanges I51 and have oil filling openings I93 within the flange I9I, a stop plug l95- being provided to normally seal the filler openings. The annular flange IQI, in each cover, is preferably provided with a depressed seat I95, andI provide a band preferably of sheet steel 25I around-the outer surfaces of the annular flange I9I','the' opposed ends ofthe band being received in -th'e seat I99 and held in place by means of a set screw 253 which serves to draw the ends of the band into the depression and tighten the same upon the annular-flange I9I. This band provides a good bearing surface for tiltably mounting the casing I! in the yoke 39.

The yoke 35 has a pairof arms Ill extending outwardly and forwardly of the collar portion 52, the terminal portions of the arm forming split cap bearings 285 in which the flanges I9I, faced withthe steel band 2M at the opposite ends of *the casing, may be received. The cap bearings are provided with index marks 26'! on opposite sides thereof to cooperate with the graduated dial plate 259, shown in Figure 11, the edges of which are graduated to indicate the angularity of the casing in the bearings 255. The index plates 259 are mounted upon the cap plates 4? over the filler plugs 55 by means of set screws penetrating openings 2H" formed in the index plates, said set screws threading into embossments 2I3 formed on the cover plates 41 preferably adjacent and within the annular flanges I9 I. Oneof the cap bearings 255 is provided with a manually operable clamp knob 235 in order to clamp the housing I! in angul-arly adjusted posi-. tion on the yoke 39, the other cap bearing being fastened to a predetermined snugness on its cooperating flange Nil by suitable screws 219 which may be locked in place by means of set screws 22L It will be seen that the casing forms a sealed leak-proof enclosure for the tube 35 which, however, maybe-readily replaced by removing the covers 4'1. ;The casing, however, is compact and light in weight. Thearrangement of the chambers I91 in position extending alongside of the cavity 21 provides an exceedingly compact unit and aids in reducing the weight of the casing. It is intended that the casing shall be filled with an insulating fluid such as oil in order to aid in insulating the tube 35 by oil immersion. To this end, means I43 forming an oil reservoir is attached on the casing, said reservoir preferably comprising an expansible member I45 sealed at one end on a tubular fitting I41 which is threaded in an opening I45 formed in the wall of the casing 25 between the open ends of the chambers I01 whereby the interior of the expansible means I45 is in communication at all times with the interior of the cavity 21. Yielding means preferably comprising a helical spring I63 is provided in position normally to compress the housing I45 so as to maintain the cavity 2? and the chambers I91 around the sockets [I3 completely filled with insulating oil. The spring and the expansible means M5 may be enclosed in a shell-like cover I61 having an open end adapted to be secured on a rim I69 formed on and ending outwardly of the housing 25.

In order to release the pressure of the spring I63 when filling the casing with oil, I provide a threaded stem I64 adapted to be threaded into a collar I66 in the end of the expansible member. This stem has a nut I65 adapted to betightened on the stem to retract the spring to any desired degree, and gage mark may be provided onthe nut and coverin order to indicate the expansion of the reservoir and consequently the amount of liquid that may be charged into the casing. The amount of liquid will vary to some extent with the mean temperature in which the device is set up for operation.

It is thought that the invention and numerous of its attendant advantages will be understood from the foregoing description, and it is obvious that numerous changes may be made in the form, construction and arrangement of the several parts without departing from the spirit or scope of the invention, or sacrificing any of its attendant advantages, the form hereindescribed being a preferred embodiment for the purpose ofillustrating the invention. v The invention is hereby claimed as follows:

1. A mounting for an X-ray tube-comprising a casing having an elongated'cavity for. receiving an X-ray tube, said casing having lateral openings, and means forming elongated chambers communicating laterally thereof with said cavity through said openings, said chambers having axes lying in a plane substantially parallel to and spaced from the longitudinal axesof said cavity.

2. A mounting for an X-ray tube comprising a casing forming an elongated, substantially cylindrical tube-receiving cavity and integral, substantially cylindrical cable receptacle chambers communicating with said cavity laterally of said chambers, the axes of said chambers lying in a plane offset from the longitudinal axis of the cavity.

3. A mounting for an X-ray tube comprising a casing forming an elongated, substantially cylindrical tube-receiving cavity and integral substantially cylindrical cable receptacle chambers communicating with said cavity laterally of said chambers, the axes of said chambers lying in a plane offset from the longitudinal axis of the cavity a distance not less than the radial dimension of said cavity.

4.- A mounting'for an X-ray tube comprising a substantially cylindrical casing, having walls forming an elongated cavity for receiving an X- ray tube, said casing having lateral openings in said walls, and'means forming elongated chambers communicating'laterally thereof with said cavity through said openings, said chamber having longitudinal axes extending tangentially with respect to the walls of the casing.

5. A mounting for an X-ray tube comprising a casing having an elongated cavity for an X-ray tube, means on said casing forming journals for tilta'bly carrying the casing in a support, a support yoke affording clamp bearings receiving said journals and in which said casing is adjustably tiltable, and means on said clamp bearings and on said casing for indicating the tilted adjustment of the casing in said bearings.

6. A mounting for an X-ray tube, comprising a casing having an elongated cavity for an X-ray tube, said casing having elongated chambers opening laterally of the chambers upon said cavity, support means in said chambers for receiving cables, terminal means on said support means, including a bracket at one end of the cavity and an arm carrying a stem in position at the other end of said cavity to detachably receive and support one end of the X-ray tube and a hanger comprising a terminal block and means to secure the same on the opposite end of the X-ray tube, and means for removably connecting the hanger on said bracket.

7. A mounting for an X-ray tube comprising a casing having an elongated cavity for an X-ray tube, said casing having an opening at least at one end of said cavity, cable support means in said casing including a bracket in said cavity adjacent the open end thereof and an arm at the other end of said cavity, said arm having tube support means thereon to interfittingly receive and support one end of the X-ray tube whereby the tube may be inserted through said opening and connected on said tube support means, a hanger and means to secure the same on the opposite end of the X-ray tube, and means for detachably securing the hanger on said bracket.

8. A mounting for an X-ray tube comprising a casing having an elongated cavity for an X-ray tube, said casing having an opening at least at one end of said cavity, cable support means in said casing including a bracket in said cavity adjacent the open end thereof and an arm carrying a stem at the other end of said cavity in position to detachably receive and support one end of the X-ray tube, said stem being provided with a head for receiving a notched member on the end of the X-ray tube whereby to support the same in place in the cavity when inserted therein through said opening, a hanger comprising a terminal block and means to secure the same on the opposite end of the X-ray tube, and means for removably connecting the hanger on said bracket.

9. A mounting for an X-ray tube comprising a casing having an elongated cavity for receiving and supporting the tube, chamber means on said casing forming receptacles for cable means connecting with the tube, said cavity being open at the opposite ends of the casing, said chamber means opening upon said cavity intermediate the opposite open ends thereof, and covers comprising plates removably secured on said casing for sealing the opposite ends of said cavity, said covers being formed with outwardly projecting journals for rotatably mounting the casing in spaced bearings.

10. A mounting for an X-ray tube comprising a casing having an elongated cavity for receiving and supporting the tube, a support yoke comprising a pair of spaced bearing clamps in axial alignment, said cavity being open at the opposite ends of the casing, and removable covers for sealing ried therebetween in adjusted angular position on the yoke.

11. A mounting for an X-ray tube comprising an elongated casing for receiving the tube, journal means at the opposed ends of the casing, a yoke comprising a stem and spaced clamps on said stem for receiving the spaced journals in order to support the casing on the yoke, and means forming a support arm having a collar, said stem being supported in said collar for turnable movement there- 12. A mounting for an X-ray tub as set forth in claim 11, including latch means for securing the yoke in any one of a plurality of angularly adjusted positions with respect to said collar.

13. A mounting for an X-ray tube comprising a support collar, a yoke comprising a stem axially movable in said collar, an elongated casing for receiving the tube, journals formed at the opposite ends of the casing, and spaced clamps on said stem for receiving the spaced journals in order to support the casing on the yoke.

14. A mounting for an X-ray tube comprising a support collar, a yoke comprising a stem axially movable in said collar, an elongated casing for receiving the tube, journals formed at the opposite ends of the casing, spaced clamps on said stem for receiving the spaced journals in order to sup-. port the casing on the yoke, said stem comprising telescopic members supported in said collar, and spring means normally urging said telescopic members toward relatively contracted position to retain said yoke in retracted position on said collar, while permitting said yoke to be arranged in projected position thereon.

15. A mounting for an X-ray tube comprising a support collar, a yoke comprising a stem axially movable in said collar, an elongated casing for receiving the tube, journals formed at the opposite ends of the casing, spaced clamps on said stem for receiving the spaced journals in order to support the casing on the yoke, a support standard, an arm carrying the support collar and pivoted for swinging movement on the support standard, and means to latch the arm in one of a plurality of angular positions with respect to said support standard.

JULIUS J. GROBE. 

